k=7:2=3,5
h*7/2=3/2
h=3/7
P_ABC= 1/2*5*3/7=15/14
P_DEF= 15/14*(7/2)²= 85/8
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k=7:2=3,5
h*7/2=3/2
h=3/7
P_ABC= 1/2*5*3/7=15/14
P_DEF= 15/14*(7/2)²= 85/8